Finding the Fourth Proportional to 1,382.37, 1,907.90 and 884.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.37 : 1,907.90 = 884.98 : x
2. Step 2: Convert to fraction form
   1,382.37/1,907.90 = 884.98/x
3. Step 3: Cross multiply
   1,382.37x = 1,907.90 × 884.98
4. Step 4: Simplify right side
   1,382.37x = 1,688,453.34
5. Step 5: Solve for x
   x = 1,688,453.34/1,382.37
6. Step 6: Final answer
   x = 1,221.42